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Quit Slapping Me Around 900 1994

posted by  Amarin on  Sat Apr 30 06:37 CST 2022
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last visit: Thu Oct 23 22:42 CST 2014
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Presence of cross-hatch machining marks should be seen all along the length of the bore, not only near the bore's top.

Piston slap usually occurs near the bottom of bore (where the change of direction occurs from piston's fully down then start to travel up again). This is where the wear is usually more.

The mechanic or machinist should demonstrate to you (using dial bore gauge) measuring any wear along the bore instead of pointing to presence of cross-hatch machining marks as if to say everything is ok.

If everything is ok (no wear) then there should be no slapping around.

There could also be slight wear at the piston's skirt causing the slap.

The bore could be worn conically (ie more at bottom, less near top)

The only way to fix it is to bore and oversize the pistons.
Generally yes.

Amarin.





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New Quit Slapping Me Around [900][1994]
posted by  Townshend Act subscriber  on Sat Apr 30 01:18 CST 2022 >


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